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Fixed overflow in local_thr results calculation

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This commit is contained in:
Pieter Hintjens 2013-02-25 14:13:15 +01:00
parent a85c9f45d1
commit 066f3d2c9b
1 changed files with 12 additions and 24 deletions
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36
perf/local_thr.cpp
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@ -26,34 +26,21 @@
int main (int argc, char *argv []) int main (int argc, char *argv [])
{ {
const char *bind_to;
int message_count;
size_t message_size;
void *ctx;
void *s;
int rc;
int i;
zmq_msg_t msg;
void *watch;
unsigned long elapsed;
unsigned long throughput;
double megabits;
if (argc != 4) { if (argc != 4) {
printf ("usage: local_thr <bind-to> <message-size> <message-count>\n"); printf ("usage: local_thr <bind-to> <message-size> <message-count>\n");
return 1; return 1;
} }
bind_to = argv [1]; const char *bind_to = argv [1];
message_size = atoi (argv [2]); size_t message_size = atoi (argv [2]);
message_count = atoi (argv [3]); int message_count = atoi (argv [3]);
ctx = zmq_init (1); void *ctx = zmq_init (1);
if (!ctx) { if (!ctx) {
printf ("error in zmq_init: %s\n", zmq_strerror (errno)); printf ("error in zmq_init: %s\n", zmq_strerror (errno));
return -1; return -1;
} }
s = zmq_socket (ctx, ZMQ_PULL); void *s = zmq_socket (ctx, ZMQ_PULL);
if (!s) { if (!s) {
printf ("error in zmq_socket: %s\n", zmq_strerror (errno)); printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
return -1; return -1;
@ -62,12 +49,13 @@ int main (int argc, char *argv [])
// Add your socket options here. // Add your socket options here.
// For example ZMQ_RATE, ZMQ_RECOVERY_IVL and ZMQ_MCAST_LOOP for PGM. // For example ZMQ_RATE, ZMQ_RECOVERY_IVL and ZMQ_MCAST_LOOP for PGM.
rc = zmq_bind (s, bind_to); int rc = zmq_bind (s, bind_to);
if (rc != 0) { if (rc != 0) {
printf ("error in zmq_bind: %s\n", zmq_strerror (errno)); printf ("error in zmq_bind: %s\n", zmq_strerror (errno));
return -1; return -1;
} }
zmq_msg_t msg;
rc = zmq_msg_init (&msg); rc = zmq_msg_init (&msg);
if (rc != 0) { if (rc != 0) {
printf ("error in zmq_msg_init: %s\n", zmq_strerror (errno)); printf ("error in zmq_msg_init: %s\n", zmq_strerror (errno));
@ -84,8 +72,9 @@ int main (int argc, char *argv [])
return -1; return -1;
} }
watch = zmq_stopwatch_start (); void *watch = zmq_stopwatch_start ();
int i;
for (i = 0; i != message_count - 1; i++) { for (i = 0; i != message_count - 1; i++) {
rc = zmq_recvmsg (s, &msg, 0); rc = zmq_recvmsg (s, &msg, 0);
if (rc < 0) { if (rc < 0) {
@ -98,7 +87,7 @@ int main (int argc, char *argv [])
} }
} }
elapsed = zmq_stopwatch_stop (watch); unsigned long elapsed = zmq_stopwatch_stop (watch);
if (elapsed == 0) if (elapsed == 0)
elapsed = 1; elapsed = 1;
@ -108,9 +97,8 @@ int main (int argc, char *argv [])
return -1; return -1;
} }
throughput = (unsigned long) double throughput = ((double) message_count / (double) elapsed) * 1000000;
((double) message_count / (double) elapsed * 1000000); double megabits = (double) (throughput * message_size * 8) / 1000000;
megabits = (double) (throughput * message_size * 8) / 1000000;
printf ("message size: %d [B]\n", (int) message_size); printf ("message size: %d [B]\n", (int) message_size);
printf ("message count: %d\n", (int) message_count); printf ("message count: %d\n", (int) message_count);